Step 1: Understanding affective psychotic disorders.
Affective psychotic disorders refer to conditions that involve mood disturbances along with psychotic features, such as hallucinations or delusions. Schizophrenia is a common example of such a disorder.
Step 2: Analyzing the options.
- (1) Schizophrenia: Correct. Schizophrenia is a psychotic disorder that can involve severe mood disturbances, delusions, and hallucinations.
- (2) Delusional disorder: Incorrect. This is a form of psychosis characterized by persistent delusions but without the severe mood disturbances seen in affective psychotic disorders.
- (3) Mental retardation: Incorrect. Mental retardation, now referred to as intellectual disability, is a developmental disorder and does not involve psychosis.
- (4) Bipolar disorders: Incorrect. Bipolar disorder involves mood swings but is not classified as a psychotic disorder unless psychotic features are present.
Step 3: Conclusion.
The correct answer is (1), as schizophrenia is an affective psychotic disorder.